I already have an other Vovox speaker cable and so stuck with this brand for speaker cables as I had read a lot of good reviews about them and also saw videos on YouTube. And I, personally, was satisfied with my first Vovox cable.
They are pricey but you get what you pay for. It's a one-time investment for a life-time, in my opinion. One doesn't need to worry about replacing the cables for a better quality sound.
The info sheet which is included in the package says that these cables need to be used for some time before their full sound potential is achieved. I found that interesting and I think it makes sense because they are sensitive cables.
So, overall they are pricey but an investment.